Extension of Tomcat's default class loader which adds instrumentation
to loaded classes without the need to use a VM-wide agent.

To be registered using a
Loader tag
in Tomcat's Context
definition in the server.xml file, with the Spring-provided
"spring-tomcat-weaver.jar" file deployed into Tomcat's "server/lib" (for Tomcat 5.x) or "lib" (for Tomcat 6.x) directory.
The required configuration tag looks as follows:

Typically used in combination with a
ReflectiveLoadTimeWeaver
defined in the Spring application context. The addTransformer and
getThrowawayClassLoader methods mirror the corresponding methods
in the LoadTimeWeaver interface, as expected by ReflectiveLoadTimeWeaver.

See the PetClinic sample application for a full example of this
ClassLoader in action.